103322021 has 6 divisors (see below), whose sum is σ = 113568966. Its totient is φ = 93929000.

The previous prime is 103321997. The next prime is 103322033. The reversal of 103322021 is 120223301.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 86397025 + 16924996 = 9295^2 + 4114^2 .

It is a de Polignac number, because none of the positive numbers 2^k-103322021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103321987 and 103322005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103321021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 426830 + ... + 427071.

It is an arithmetic number, because the mean of its divisors is an integer number (18928161).

Almost surely, 2^103322021 is an apocalyptic number.

103322021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103322021 is a deficient number, since it is larger than the sum of its proper divisors (10246945).

103322021 is an equidigital number, since it uses as much as digits as its factorization.

103322021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853923 (or 853912 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 103322021 is about 10164.7440203873. The cubic root of 103322021 is about 469.2428143029.

Adding to 103322021 its reverse (120223301), we get a palindrome (223545322).

The spelling of 103322021 in words is "one hundred three million, three hundred twenty-two thousand, twenty-one".